Si3n4: 1, corrosion-resistant strong acid, alkali, seawater can also be used. 2, high temperature, ultra-wear-resistant, silicon nitride ceramic ball at 8000c, the strength, Hardness almost unchanged. 3, non-magnetic, insulation, magnetic field can also be used, non-conductive. 4, light weight, lighter than the average material bearing 1/4, the density of 3.20g / cm3. 5, high rigidity, high strength, the hardness of the bearing than the double, elastic Modulus of about 1/3. 6, high-speed rotation, rotating body (ball) light weight, small centrifugal rotation. 7, silicon nitride ceramic ball linear expansion coefficient of 3.2 ã? 10-6 / k, almost 1/4 of bearing steel. 8, silicon nitride ceramic ball bearing self-lubricating can solve the lubrication caused By pollution and add inconvenience. 9, drug resistance, mechanical strength, damage toughness, low thermal conductivity. Application areas: composite bearings, mechanical seals, chemical pumps, nozzles, Auto parts, heat exchanger parts, vacuum equipment and other harsh environments. Product, Silicon nitride balls(si3n4) Diameter, Φ0.5mm80.0mm Grade, G5-g25 Faq: Q1. Can i have a sample order ? A: yes, we welcome sample order to test and check quality. Mixed samples are acceptable. Q2. What about the production time? A:sample needs 3-5 days, mass production time needs 2-3 weeks for order quantity more than Q3. How do you ship the goods and how long does it take to arrive? A: we usually ship by dhl, ups, fedex or tnt. It usually takes 3-5 days to arrive. Airline and sea shipping also optional. Q4. How to proceed an order ? Firstly let us know your requirements or application. Secondly we quote according to your requirements or our suggestions. Thirdly customer confirms the samples and places deposit for formal order. Fourthly we arrange the production.
Si3N4: 1, corrosion-resistant strong acid, alkali, seawater can also be used. 2, high temperature, ultra-wear-resistant, silicon nitride ceramic ball at 8000C, the strength, hardness almost unchanged. 3, non-magnetic, insulation, magnetic field can also be used, non-conductive. 4, light weight, lighter than the average material bearing 1/4, the density of 3.20g / cm3. 5, high rigidity, high strength, the hardness of the bearing than the double, elastic modulus of about 1/3. 6, high-speed rotation, rotating body (ball) light weight, small centrifugal rotation. 7, silicon nitride ceramic ball linear expansion coefficient of 3.2 Ã? 10-6 / K, almost 1/4 of bearing steel. 8, silicon nitride ceramic ball bearing self-lubricating can solve the lubrication caused by pollution and add inconvenience. 9, drug resistance, mechanical strength, damage toughness, low thermal conductivity. Application areas: composite bearings, mechanical seals, chemical pumps, nozzles, auto parts, heat exchanger parts, vacuum equipment and other harsh environments. PRODUCT SILICON NITRIDE BALLS(Si3N4) DIAMETER Φ0.5mmâ??Φ80.0mm GRADE G5-G25 PERFORMANCE 1,59% lighter than the ball, which means less centrifugal force and wear less groove at high speed and acceleration. 2, 44% of the modulus of elasticity, which means less load deformation. 3, Rockwell hardness 92 4, the smaller the coefficient of friction 5, only 1/4 of the thermal expansion coefficient of steel, you can tolerate high temperatures. 6, can achieve excellent surface finish, Ra can be 4 to 6. 7, can withstand high temperature and high hardness and strength up to 1050 ° C 8, never rust, can be no lubricant. The 9, more resistant to corrosion than steel. APPLICATION Silicon nitride ceramic ball can be used for a variety of bearing performance requirements: high-speed / ultra-high-speed bearings, high precision bearings, vacuum bearings, high / low temperature bearings, non-magnetic bearings, high precision ball screw; , High temperature pump, metering pump used as a ball, measuring the ball. Silicon nitride ceramic ball is generally assembled into a hybrid bearing, can be used in high-tech industries such as aviation, defense and other industries, can also be widely used in chemical, metallurgical, medical, food, oil, electronics and other industries.
Silicon Nitride (Si3N4) is a man made compound synthesized through several different chemical reaction methods. Parts made of Si3N4 are pressed and sintered by well developed methods to produce a ceramic with a unique set of outstanding properties. Silicon Nitride Ceramic is dark gray to black in color and can be polished to a very smooth reflective surface, giving parts with a striking appearance. The very high quality bodies developed for these demanding high reliability applications are available today and can be used in many severe mechanical, thermal and wear applications.What's more, Silicon Nitride Si3N4 is an electrical insulator and is not wet by nonferrous alloys. Silicon nitride is a rather expensive material, but its performance to cost benefit ratio is excellent in the applications where it can outperform the normally utilized materials with long life and very reliable low maintenance operation.Zirconium oxide (Zirconia) is an extremely tough ceramic with a hardness of >9 Mohs which makes it and excellent material for extreme wear, high temperature and harsh environment applications. Zirconia ceramics have remarkable properties of strength, hardness and wear resistance in addition to withstanding attack from molten metal, organic solvents, acids and alkalis. They can also withstand high temperatures for long periods even under severe mechanical stress. Typical Applications include: volatile chemical solutions transportation, jet and diesel engine components, containers for molten metals, high speed cutting tools, high wear components, transistor insulators, dental implants, bearing balls, pump seals, and ball valves. Contact us for more info!
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MaterialCeramic(ZRO2,SI3N4) 1.Size: 0.8mm-10mm 2.Grades: G5-G20 3.Applications: Widely used in different types of ceramic,enamel,glass,chemical industry and thick hard material finishing and deep processing of the factory.It is grinding medium of the fine crushing equipment such as ball mill,vibration mill,Cylindrical grinding machine.The crushing grinding efficiency and wear resistance significantly better than ordinary or natural pebble stone ball.
Model no. Ceramic balls Made in taiwan, roc Key features Black silicon nitride ball, gray silicon nitride ball, zirconia ball Material: silicon nitride (si3n4) , zirconia (zro2) , and alumina ( al2o3) Specification: 0.4mm~63.5mm , with different gauge. Precision: g5 ~ g20 Usage: for bearing, inspection, and other rolling conditions. We also offer grinding and mill ceramic balls. Payment terms:d/a , t/t , l/c
Rated Voltage 110V-380V 50/60Hz Rated Power 500W-3000W Insulation electric strength 2,500V, 50Hz at room temperature, no punch-through in one minute Leakage current 0.025mA under normal operating condition, 10 mA in water after broken Acid corrosion resistance Boil for 6h in 5% sulfuric acid solution, corrosion rate 10g/m2.h Alkali corrosion resistance Boil for 6h in 30% NaOH solution, corrosion rate 0.6g/m2.h Life 5000h Technical Data Breaking Strength at Room Temperature 900Mpa Fracture Toughness at Room Temperature 6.0-8.0 Mpa.m1/2 Volume Density 3.20-3.4g/cm3 Volume Resistivity at Room Temperature 1014�©.cm Relative Dielectric Constant at Room Temperature 6-7 Heat Conductivity 23-25W/ m-k Thermal Expansion Coefficient 3.1�?10-6/ Hardness HRA92-94 Mechanical Property Hardness HRA Fracture Toughness Mpa.m1/2 Bending Strength Mpa 92.0~94.0 6.0~8.0 900 The product is liquid heating silicon nitride ceramic heating element, applicable media: liquid, water, heater within 3,000W, boiler within 2,500W, steamer within 1,800W. Match J ?, K ?, L ?, R ? and U ? packaging. Executive Standard: JB/T10320-2002 Household and Similar Silicon Nitride Heating Elements Liquid Heating Silicon Nitride Ceramic Heating Element The product uses high-performance silicon nitride ceramics as the matrix, has strong high temperature mechanical strength, heat shock resistance, acid and alkali corrosion resistance, and excellent insulating property and conducting property, besides, unique formula and hot pressing manufacturing technology of the company make the product have the following performances and characteristics: Good electrical security, leakage current less than 10mA after breaking Thermostability, dry point reaching 1,300 High hydraulic loading rate, hydraulic loading rate of heating liquid reaches 78w/cm2 maximally Small volume, high power Little thermal inertia, rapid temperature rise Long service life Application Range of Acid and Alkali Corrosion Resisting Liquid Heating Type Silicon Nitride Ceramic Heating Element Rapid Heating and Water Storage Electric Heater Constant Temperature Bathtub Heater Sauna Steam Generator Rapid Heating Liquid Heater Directly-heated Electric Heating Faucet and Liquid Heater Energy-saving Rapid Heating Electrical Heater Electric Heater Widely used for instant, directly-heated and water storage, and energy-saving instant heating electric heaters, instant liquid heaters, electric heaters, cold and hot drink dispensers, air-conditioning heaters, air energy heaters, instant faucets, thermostats, steam generators, and other industries of household, industrial and commercial electric heaters.
Technical Data Breaking Strength at Room Temperature 900Mpa Fracture Toughness at Room Temperature 6.0-8.0 Mpa.m1/2 Volume Density 3.20-3.4g/cm3 Volume Resistivity at Room Temperature 1014Ω.cm Relative Dielectric Constant at Room Temperature 6-7 Heat Conductivity 23-25W/m-k Thermal Expansion Coefficient 3.110-6/ Hardness HRA92-94 Main Performance Indexes of Silicon Nitride Ceramics: Performance Reactive Sintering Silicon Nitride Normal Pressure Sintering Silicon Nitride The Companys Hot Pressed Sintering Silicon Nitride Volume Density g/cm3 2.21 3.15 3.2~3.3 Bending StrengthMpa 137.3 490.3 900 Fracture Toughness (Mpa·m1/2) 2.17 4.71 6.0~8.0 Hardness (HRA) 87.0 92.0~94.0 Heat Conductivity Coefficient (W/m·k) 5.44 12.56 23~25 Thermal Expansion Coefficient 10-6 (RT~1200) 3.2 3.2 2.95~3
silicon nitride ceramics Silicon nitride ceramic is an inorganic material ceramic that does not shrink during sintering. The strength of silicon nitride is very high, especially hot-pressed silicon nitride, which is one of the hardest substances in the world. It has high strength, low density, high temperature resistance and other properties. High temperature resistance, the strength can be maintained to a high temperature of 1200 without decreasing, and will not melt into a molten body after being heated, and will not decompose until 1900 It has amazing chemical corrosion resistance, and can withstand almost all inorganic acids and less than 30% caustic soda solution, as well as many organic acids; It is also a high-performance electrical insulating material. Si3N4 can be used to manufacture ball bearings by virtue of its light weight and high rigidity. It has higher accuracy than metal bearings, generates less heat, and can operate in higher temperatures and corrosive media. The steam nozzle made of S ceramic has wear resistance, heat resistance and other characteristics, and it will not be obviously damaged after being used in 650 boiler for several months.
